Kleihauer-Betke stain; Flow cytometry - fetal-maternal erythrocyte distribution; Rh incompatibility - erythrocyte distribution The fetal-maternal ...

Biopsy - brush - urinary tract; Retrograde ureteral brush biopsy cytology; Cytology - ureteral retrograde brush biopsy A ureteral retrograde brush biopsy is ...

Cystography - retrograde; Cystogram Retrograde cystography is a detailed x-ray of the bladder. Contrast dye is placed into the bladder through the urethra. ...

Retinal photography; Eye angiography; Retinopathy - fluorescein Fluorescein angiography is an eye test that uses a special dye and camera to look at blood ...

Retinol test The vitamin A test measures the level of vitamin A in the blood. The vitamin A test measures the level of vitamin A in the blood. Blood is ...

Retinal photography; Eye angiography; Retinopathy - fluorescein Fluorescein angiography is an eye test that uses a special dye and camera to look at blood ...

Anemia - reticulocyte Reticulocytes are slightly immature red blood cells. A reticulocyte count is a blood test that measures the amount of these cells in ...

Respiratory syncytial virus antibody test; RSV serology A respiratory syncytial virus (RSV) antibody test is a blood test that measures the levels of ...

Respiratory inductance plethysmography; Penile pulse volume recording; Pulse volume recordings; Segmental pulse volume recordings Plethysmography is used to ...

Arterial blood gas analysis; ABG; Hypoxia - ABG; Respiratory failure - ABG Blood gases are a measurement of how much oxygen and carbon dioxide are in your ...

Resin T3 uptake; T3 resin uptake; Thyroid hormone-binding ratio The T3RU test measures the level of proteins that carry thyroid hormones in the blood. This ...

Renogram; Kidney scan A renal scan is a nuclear medicine exam in which a small amount of radioactive material (radioisotope) is used to measure the function ...

Plasma renin activity; Random plasma renin; PRA The renin test measures the level of renin in blood. Plasma renin activity; Random plasma renin; PRA. The ...

Renal vein thrombosis - venogram A renal venogram is a test to look at the veins in the kidney. It uses x-rays and a special dye (called contrast). There ...

Venogram - renal; Venography; Venogram - kidney; Renal vein thrombosis - venogram A renal venogram is a test to look at the veins in the kidney. It ...

Casts in the urine; Fatty casts; Red blood cell casts; White blood cell casts Urinary casts are tiny tube-shaped particles that can be found when urine is ...

Radionuclide renal perfusion scan; Perfusion scintiscan - renal; Scintiscan - renal perfusion A renal perfusion scintiscan is a nuclear medicine test. It ...

Renal biopsy; Biopsy - kidney A kidney biopsy is the removal of a small piece of kidney tissue for examination. Renal biopsy is a medical procedure in which ...

CT angiography - abdomen and pelvis Computed tomography angiography - abdomen and pelvis; CTA - abdomen and pelvis; Renal artery - CTA; Aortic - CTA; ...

Renal artery stenosis - arteriography Renal arteriography is a special x-ray of the blood vessels of the kidneys. The gold standard for diagnosis of renal ...